Riveting machine



p 19, 1933- E. F. MEYERING 1,927,096

RIVETING MACHINE Filed Nov. 30, 1931 2 Sheets-Sheet 1 INVENTOR fawz'n F Meyer-a ATTORNEY p 1933- E. F. MEYERING 1,927,096

RIVETING MACHINE Filed Nov. 30, 1931 2 Sheets-Sheet 2 4 8 KS g u is I I i: MIT T 2 i ix 4. El v 1? v INVENTOR 0K wrc'n f. Neyerm ATTORNEY Patented Sept. 19, 1933 1,927,036 nrvn'ri -e MAC INE Edwin Meyer-ring, llrondeauoit, N. Y., assignor to High Speed Hammer Company, inc, Rocheste N. 355., a corporation oi New York Application November 30, 1931 Serial No. 578,157

3 (ll-aims.

The invention relates to riveting machines of the type in which the hammer is cushioned and its helve pivoted to a connecting rod by means of a separate wrist pin. In practice this arrangement is objectionable because of wear of the moving parts and the resultant clatter incident to the play of the parts, especially when the parts become worn.

Therefore, it is the purpose of the present invention to minimize the wear, obviate clattenreduce the number of parts and utilize the cushioning action of the buffers to the best possible advantage.

In carrying out the invention the buffers, or cushions, associated with the helve of the hammer and the pitman, are separated by a onepiece retainer to which the wrist pin is rigidly connected by means of a pin, or otherwise, to

prevent any movement between the said retainbeing separately formed and readily assembled.

The invention will be best understood and the advantages appreciated from the following description, reference being had to the drawings hereto attached in which:

Figure 1 is a side View of a riveting machine illustrative of an embodiment of the invention, parts being broken away. 1

Fig. 2 is a rear view of the machine, parts being the following description and designated in the.

several views of the drawings by like'reference characters.

The frame of the machine includes a base 1 and overhanging arm 2 in which is mounted the usual hammer 3. Thedrive shaft 4 is mounted in the brackets 5 and 6 applied to the base 1. The helve comprises a wooden portion '7 and a metal part 8, which are connected in any substantial way, and is pivoted to the frame 2 at 9. The connecting rod 10 is coupled to a collar 11 mounted on a cam portion 12 of the drive shaft 4.

Buffers l3 and 1e are mounted on the connect-- ing rod 10 above and below the helve and are er and wrist pin while admitting of said parts broken away to show more clearly the relation-.

(on. Vii- 43) separated by a one-piece retainer 15 whichis recessed to provide upper and lower seats 16 and 17, respectively, in which the upper and lower bulfers 13 and 14 are seated, the walls of said seats being flared to facilitate centering of the buffers in their seats. Plates 18 and 19 having similar seats and 21 receive the outer ends of the respective buffers 13 and Upper and lower pairs of nuts 22 and 23 provide for adjustment of the buffers and hold them in the respective seats of the re- 65 it ier andplates 18 and 19.

The metal part 8 of the helve constitutes a rocker and its outer end is enlarged and formed with opening 24 in which the one-piece retainer 15 is received. The wrist pin 25 passes 0 through an opening 24 formed in the one-piece retainer 15 and its ends are mounted in bearings 26 formed the rocker 8 at the sides of the opening 24. Bushings 27 are fitted in the bearings 26 and receive the ends of the wrist pin 25. The con- 5 necting rodlO passes loosely through an opening 28 formed in the wrist pin 25 and through an opening 29 in the retainer 15. A pin or key 30 secures the Wrist pin to the retainer, thereby preventing any relative movement between these parts, maintaining the connecting rod out of engagement with the walls of said opening 28 in the wrist pin by maintaining a common center line for the bore of the openings 28 and 29, respectively in the wrist pin and retainer.

By having the wrist pin pinned or rigidly secured to the retainer 15 and the connecting rod spaced therefrom, movement between these parts is prevented and wear obviated. Moreover, these parts may be separately formed'and readily assembled and replaced should occasion require.

Furthermore, clatter is wholly eliminated and any looseness between the bufiers 13 and 14 and the retainer will not affect relative position between the wrist pin and the retainer. Hence, all shocks are neutralized by the buiTers 13 and 14 as intended. It is also noted that by maintaining a constant relationship between the seats of the bufiers l3 and 14 on the intermediate retainer 15, the full benefit of the energy stored in the buliers during each cycle is transmitted to the helve, or rocker 8, through the wrist pin 25.

In Fig. 5 there is illustrated a modification wherein the plate 31 which receives the upper end of the cushion 13 may have a central opening 32 to receive the flange 33 of the threaded bore nut 34 so as to permit the flange to be deflected, as shown, within the nut or riveted thereto so as to prevent clattering between the innerface of the nut and the plate 31. In this form, a lock nut 35 may be employed, if desired. Obviously, this form of connection of the plate 31 with the rod and the buffer 13 may be substituted for the pair of nuts 22, shown in Fig. 1 and the same structure may be substituted for the plate 19 and nuts 23 of Fig. 1.

What is claimed is:

1. In a riveting machine including a hammer, helve, drive shaft and connecting rod, buii'ers on the connecting rod above and below the helve, a one-piece retainer on the connecting rod between the buffers, a wrist pin passing through the retainer and pivotally connecting the retainer to the helve and removable therefrom, said wrist pin having the said connecting rod passing loosely therethrough, and means rigidly connecting the wrist pin to the said retainer to maintain the retainer and wrist pin in relatively fixed relation and prevent turning of the wrist pin in the retainer and wear of the connecting rod through contact of the edges of the wrist pin with the connecting rod.

2. In a one-piece riveting machine including a hammer, helve, drive shaft and connecting rod, a retainer carried by the helve and loose on the connecting rod, buffers on the connecting rod above and below the retainer and seated thereon, plates seated against the outer ends of the buffers, means adjustably confining the plates and buffers on the connecting rod, a wrist pin loose on the connecting rod and passing through the retainer and pivotally connecting the retainer to the helve and removable therefrom, and means rigidly connecting the wrist pin to the retainer to maintain the retainer and wrist pin in relatively fixed relation and prevent turning of the wrist pin in the retainer and wear of the connecting rod through contact of the edges of the wrist pin with the connecting rod.

3. In a riveting machine embodying a hammer, a helve including a rocker having an open end portion, a connecting rod, buffers on the connecting rod with the helve therebetween, plates on the connecting rod seated against the outer ends or" the buffers, a one-piece retainer on the connecting rod within the opening of the rocker and between the inner ends of the buffers which are seated thereon, a wrist pin passing through the one-piece retainer and having its end portions projecting and mounted in theportions oi the rocker adjacent the opening therein and removable therefrom, the connecting rod passing loosely through the wrist pin and the retainer, and a key rigidly connecting the wrist pin with the said one-piece retainer to maintain the retainer and wrist pin in relatively fixed relation and prevent turning of the wrist pin in the retainer and wear of the connecting rod through contact of the edges of the wrist pin with the connecting rod.

EDVJ IN F. MEYERING.

CERTIFICATE OF C(PRREGTEQN.

Patent Ne. 1,927,096. September 19, 1933.

EDWIN F. MEYERING.

it is hereby certified that error appears in the printed specification of the abeve numbered patent requiring correctien as follows: Page 2, line 23, claim 2, strike out the compound were "one-piece" and insert the same befere "retainer" in line 25; and that the said Letters Patent sheulti be read with this correctitm therein that the same may cenform to the record of the ease in the Patent Office.

Signed and seaied this 24th day of October, A, i). 1933.

F. M. Hopkins (Seal) Acting tlommissiener ei Patents. 

